Vacuum cleaner



FIG. 1 is a top, front and right-side perspective view of a vacuum cleaner showing our new design;

FIG. 2 is a front-side elevational view thereof;

FIG. 3 is a rear-side elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top-side elevational view thereof; and,

FIG. 7 is a bottom-side elevational view thereof. 

We claim the ornamental design for vacuum cleaner, as shown. 